Polluted by sewage 1,430 hours in 2025
Your local MP is Jeff Smith (Labour) - Find out more about their interests, donors, and voting at They Work For You
We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Manchester Withington, here you can see overflows in red, the darker the red, the more the CSO overflowed that day.
Each CSO has a row, the most recent data is on the right hand side.
We managed to raise ยฃ150 in 2024. That's not enough to keep the site running. Please consider a one-off or small recurring donation.
Donate Now| Company | Site Name | Receiving Waterway | Overflow Days | Total Duration (hours) | Total Duration (days) |
|---|---|---|---|---|---|
| United Utilities | Burton Road (Withington) CSO | River Mersey | 23 | 455 h 29m | 18.96 |
| United Utilities | Barlow Moor Road / Rowsley Avenue CSO | River Mersey | 46 | 279 h 4m | 11.62 |
| United Utilities | Withington PS | River Mersey | 58 | 252 h 38m | 10.5 |
| United Utilities | Barlow Moor Road / Rowsley Avenue CSO | River Mersey | 23 | 211 h 36m | 8.79 |
| United Utilities | Withington PS | River Mersey | 13 | 72 h 59m | 3 |
| United Utilities | Mauldeth Road CSO | Chorlton Brook | 24 | 50 h 42m | 2.08 |
| United Utilities | Mauldeth Road West CSO | Chorlton Brook Via Culvert | 14 | 48 h 27m | 2 |
| United Utilities | Edge Lane/Wilbraham Road CSO | Chorlton Brook Via Sws | 21 | 29 h 54m | 1.21 |
| United Utilities | Mauldeth Road CSO | Chorlton Brook | 7 | 16 h 22m | 0.67 |
| United Utilities | Mauldeth Road West CSO | Chorlton Brook Via Culvert | 3 | 5 h 17m | 0.21 |
| United Utilities | Beech Road/Claude Road CSO | Chorlton Brook | 3 | 4 h | 0.17 |
| United Utilities | Edge Lane/Wilbraham Road CSO | Chorlton Brook Via Sws | 3 | 3 h | 0.12 |
| United Utilities | Barlow Moor Road/Palatine Road CSO | River Mersey | 1 | 0 h 38m | 0 |
| United Utilities | Beech Road/Claude Road CSO | Chorlton Brook | 0 | 0 h | 0 |
| United Utilities | Lombard Grove/Lorne Road CSO | Cringle Brook | 0 | 0 h | 0 |
| United Utilities | St Werbughes Road / Sandy Lane CSO | Chorlton Brook | 0 | 0 h | 0 |
| United Utilities | Lombard Grove/Lorne Road CSO | Cringle Brook | 0 | 0 h | 0 |
| United Utilities | Wilmslow Road/Brook road CSO | Leigh Brook | 0 | 0 h | 0 |
| United Utilities | St Werbughes Road / Sandy Lane CSO | Chorlton Brook | 0 | 0 h | 0 |
| United Utilities | Wilmslow Road/Brook road CSO | Leigh Brook | 0 | 0 h | 0 |
| United Utilities | Barlow Moor Road/Palatine Road CSO | River Mersey | 0 | 0 h | 0 |
| United Utilities | Edge Lane/Manchester Road/High Lane | Chorleton Brook Via Sws | 0 | 0 h | 0 |
| United Utilities | Burton Road (Withington) CSO | River Mersey | 0 | 0 h | 0 |
EDM (Event Duration Monitoring) data and Consented Discharges to Controlled Waters with Conditions from Environment Agency & Data Map Wales, and Scottish Water
Experimental derived data from Thames Water API, Some data may be missing or inaccurate. Live sewage data from Stream Water API
Uses Environment Agency rainfall data from the real-time data API (Beta) - Rainfall data is delayed by up to two days.
This website is intended to provide an accurate representation of the Environment Agency data. The data is hard to use, and thus some errors may have been made. If you find something that is incorrect, please raise an issue at the GitHub issues page and we'll endeavour to fix it quickly.
This project is not associated, approved or endorsed by any of the companies whose logos you see here.